聚乙烯醇
材料科学
木质素
羟乙基纤维素
纤维素
聚合物
增塑剂
生物炼制
化学工程
复合材料
原材料
化学
有机化学
工程类
作者
Siqi Huang,Shuyi Su,Haibo Gan,Ling Wu,Chaohui Lin,Di Xu,Haifeng Zhou,Xuliang Lin,Yanlin Qin
标识
DOI:10.1016/j.carbpol.2019.115080
摘要
In this study, hydroxyethyl cellulose (HEC) and polyvinyl alcohol (PVA) as the framework, borax as the cross-linker, and biomass lignin from pulping black liquors and biorefinery as the plasticizer were used to synthesize the lignin-based HEC-PVA (LCP) self-healing conductive hydrogel with highly stretchable and thermosensitive properties by the one-step fabrication method. Compared with the PVA hydrogel, the maximum storage modulus and the elongation rate was increased by 7 times and 20 times, respectively. Uniformly distributed lignin could increase the mobility and distance of polymer molecular chains, therefore improve the viscoelasticity and stretchability of the LCP self-healing hydrogel. The LCP hydrogel could recover to the original state in 12 s after 10000% shear strain for 4 cycles. The LCP hydrogel also presented good thermosensitivity and electrical conductivity, and were very promising for applications in the fields of 3D printing and wearable electronic devices, that broadened the efficient utilization of biorefinery lignin.
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